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Explain Protoderm in primary growth in shoot?
The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent bud growth and development. The protoderm produces new cells on the surface of the apical meristem, and these surface cells migrate downward and mature into the epidermis of the shoot and leaves.
The epidermal layer provides physical protection for the other internal tissues, and most importantly, guards against drying out. The epidermis produces an outer waxy coating from a substance known as cutin. This cuticle layer prevents evaporative water loss. However, leaves need carbon dioxide and they need to get rid of oxygen, so they provide openings for this gas exchange through special cells called guard cells. Two guard cells make up a functional unit, whose scientific name is stomata, or stomate.
What are epithelial tissues? What are their general function and how is that function associated to the features of the tissue? Epithelial tissues, also known as epithelia, are
What type of colour blindness is most common in men? Red-green colour blindness is the most regular form of colour blindness in men.
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Explain the Scanning Electron Microscope It can be used to observe intact cells or cell components directly. Then sections are not necessary. It is used for visualizing surface
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how is the problem of chromosome shortening addressed in eukaryotic organisms and how aging might be related to the problem
Diaphragmatic Hernia: In this condition there is a slight herniation ofabdominal organs (stomach intestine and liver) or extreme protrusion of abdominal contents into the th
In mountain rabbits, the EL-1 gene is located on chromosome 3. Four alleles of this gene have been identified in the population. With respect to EL-1, what is the maximum number of
Weiss's Theory of Fibroosseous Fixation Weiss' theory stated that there is a fibro-osseous ligament formed between the implant and the bone and this ligament can be considered
What is the approximate pH of the salivary secretion? Is it an acid or basic fluid? What are the main functions of saliva? The saliva pH is approximately 6.8. It is therefore a
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